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Dispatching command to nested chart

Apologies if there's an answer to this already...

 

I am creating a contour plot and want to add a circle to the plot using a script. When the plot is a standalone window it's easy, I add something like this:

 

SendToReport(
  Dispatch(
   {},
   "Contour Plot Graph",
   FrameBox,
   {Add Graphics Script( 2, Description( "Script" ), Circle( {0, 0}, 3 ) )}
  )

However, I am including the plot in a larger report containing other charts. To do this, I have an outline box, containing several HListBox and VListBox instances. When I do that, I can no longer get the dispatch command to reach the contour plot. Instead I get an warning like: 

 

Cannot find FrameBox[ "Contour Plot Graph" ] at {}

The tree structure looks like this:

 

 

I've tried all sorts of combinations in the first argument of Dispatch and I can't work it out, so I'd be very grateful for some help!

 

Thanks.

 

Re: Dispatching command to nested chart

Don't use Dispatch().

 

Send a message directly to the appropriate display box, the Frame Box in this case. Assuming that your window reference is stored in a variable window, try this:

 

window[OutlineBox("Contour Plot for x"][FrameBox(1)] << Add Graphics Script( 2, Description( "Script" ), Circle( {0, 0}, 3 ) );